The “Cardiac Arrest During Long-Distance Running Races: 2010–2023” study analyzed the incidence and outcomes of sudden cardiac arrests (SCAs) occurring during marathons and half-marathons in the United States. Known as the RACER2 study, it serves as a follow-up to the original RACER1 study, which covered the years 2000–2009.

In this episode, Drs. Jonathan H. Kim and Aaron L. Baggish discussed the study findings, emphasizing the importance of continued vigilance and preparedness to further reduce the risk of fatal outcomes during endurance events.

Related References:

1. Kim JH, Rim AJ, Miller JT, et al. Cardiac Arrest During Long-Distance Running Races. JAMA. Published online March 30, 2025. doi:10.1001/jama.2025.3026.
2. Kim JH, Malhotra R, Chiampas G, d'Hemecourt P, Troyanos C, Cianca J, Smith RN, Wang TJ, Roberts WO, Thompson PD, Baggish AL; Race Associated Cardiac Arrest Event Registry (RACER) Study Group. Cardiac arrest during long-distance running races. N Engl J Med. 2012;366:130-40.